Steps to reproduce
Place a crafting table
Place the crafting recipe for the hanging sign but with the copper chains
Expected result
You will have 6 hanging posters like in Java Edition
Observed result
The recipe does not exist.
This error is present for all types of wood and all types of copper chain.
Reference Image:
This works as intended. As of Java 25w35a, hanging signs cannot be crafted with copper chains in that edition.